Device for testing moving force in bearing bush of thrust bearing of hydroelectric generating set

By measuring the internal displacement force of the thrust pad through the lever principle and hydraulic loading components, the problem of accuracy in friction force monitoring after the hydropower unit is shut down is solved, precise measurement is achieved in high temperature and high pressure environments, installation is simplified and the life of the device is extended.

CN223449380UActive Publication Date: 2025-10-17STATE GRID XINYUAN GRP CO LTD +2
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Patent Information

Application Number
CN202422644691.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-31
Publication Date
2025-10-17
Estimated Expiration
2034-10-31

AI Technical Summary

Technical Problem

Existing technologies make it difficult to accurately monitor changes in friction during the inward movement of the thrust pad after a hydropower unit is shut down, especially in high-temperature and high-pressure environments, where sensors are easily damaged and measurement accuracy is low.

Method used

The lever principle is combined with a hydraulic loading component to calculate the thrust washer internal displacement force by measuring the hydraulic cylinder pressure. There is no need to install a sensor on the thrust washer. The lever and nut design are used to enhance the strength and accuracy of the device.

Benefits of technology

The device can accurately measure the maximum static friction force during the inward movement of the thrust pad under high temperature and high pressure conditions, simplify the installation process, improve the measurement accuracy and reliability of the device, and extend its service life.

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Abstract

The utility model discloses a hydroelectric generating set thrust bearing bush internal moving force testing device, which relates to the field of hydroelectric generating set load monitoring, and comprises a thrust bush and a supporting bush, and further comprises a lever, a pull rod and a hydraulic loading assembly used for hydraulic loading and pressure monitoring, one end of the lever is connected with the fixing piece, the other end of the lever is connected with the hydraulic loading assembly, a through hole for the pull rod to penetrate through is formed in the lever, threads are arranged on the outer wall of the pull rod, one end of the pull rod penetrates through the lever and is fixedly connected with the lever through a limiting nut, and a boss matched with the groove is arranged at the other end of the pull rod. One end of the hydraulic loading assembly is fixedly connected with the lever, and the other end of the hydraulic loading assembly is connected with the fixing piece. According to the utility model, the maximum static friction borne by the thrust pad in the inward moving process can be accurately measured, and the design and operation conditions of the thrust bearing can be analyzed and optimized.
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